University of Arizona is a public land-grant research university located in Tucson. Founded in 1885, it was Arizona's first university and is recognized for its strengths in astronomy, space sciences, engineering, business, agriculture, medicine, and public policy. The university enrolls more than 50,000 students and is classified among the nation's leading research institutions, conducting extensive research in areas ranging from planetary science and optics to health care and environmental sustainability. Its athletic teams, the Arizona Wildcats, compete in NCAA Division I athletics and have a strong tradition in basketball and other sports. The university's mission combines teaching, research, and public service to support Arizona and communities around the world.